Casing centralizer



This application is related to (1) U.S. Design application Ser. No. 29/405,117, filed Oct. 28, 2011; (2) U.S. Design application Ser. No. 29/405,121, filed Oct. 28, 2011; (3) U.S. Design application Ser. No. 29/405,122, filed Oct. 28, 2011; (4) U.S. Design application Ser. No. 29/405,124, filed Oct. 28,2011; (5) U.S. Design application Ser. No. 29/405,130, filed Oct. 28, 2011; (6) U.S. Design application Ser. No. 29/405,133, filed Oct. 28, 2011, the entire disclosures of which are incorporated herein by reference.

FIG. 1 is a perspective view of a casing centralizer showing our new design according to a first embodiment;

FIG. 2 is an elevational view of the first embodiment;

FIG. 3 is a top plan view of the first embodiment, the bottom plan view of the first embodiment being identical to the top plan view of the first embodiment;

FIG. 4 is a sectional view of the first embodiment taken along line 4-4 of FIG. 3;

FIG. 5 is an elevational view of the casing centralizer according to a second embodiment, the second embodiment being identical to the first embodiment except that the second embodiment has one indeterminate length as indicated in FIG. 5;

FIG. 6 is a top plan view of the casing centralizer according to a third embodiment, the third embodiment being identical to the first embodiment except that the third embodiment has five indeterminate lengths as indicated in FIG. 6;

FIG. 7 is a perspective view of a casing centralizer showing our new design according to a fourth embodiment;

FIG. 8 is an elevational view of the fourth embodiment;

FIG. 9 is a top plan view of the fourth embodiment, the bottom plan view of the fourth embodiment being identical to the top plan view of the fourth embodiment;

FIG. 10 is a sectional view of the fourth embodiment taken along line 10-10 of FIG. 9;

FIG. 11 is an elevational view of the casing centralizer according to a fifth embodiment, the fifth embodiment being identical to the fourth embodiment except that the fifth embodiment has one indeterminate length as indicated in FIG. 11;

FIG. 12 is a perspective view of a casing centralizer showing our new design according to a sixth embodiment;

FIG. 13 is an elevational view of the sixth embodiment;

FIG. 14 is a top plan view of the sixth embodiment, the bottom plan view of the sixth embodiment being identical to the top plan view of the sixth embodiment;

FIG. 15 is a sectional view of the sixth embodiment taken along line 15-15 of FIG. 14; and,

FIG. 16 is an elevational view of the casing centralizer according to a seventh embodiment, the seventh embodiment being identical to the sixth embodiment except that the seventh embodiment has one indeterminate length as indicated in FIG. 16. 

The ornamental design for a casing centralizer, as shown and described. 